CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.1	$0-$5k	0.00

A vulnerability was found in MIT Kerberos 5-1.14 (Network Authentication Software). It has been classified as problematic. This affects the function rb5_unparse_name. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on availability.

The weakness was disclosed 02/03/2016 as confirmed git commit (GIT Repository). The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2015-8631 since 12/23/2015. The exploitability is told to be easy. It is possible to initiate the attack remotely. A authentication is required for exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 88886 (Debian DLA-423-1 : krb5 security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350010 (Amazon Linux Security Advisory for krb5: ALAS-2016-691).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (110393) and Tenable (88886). The entries 80818 and 80819 are pretty similar.

Productinfo

Type

• Network Authentication Software

Vendor

• MIT

Name

• Kerberos

Version

• 5-1.14

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.1

VulDB Base Score: 6.5
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 88886
Nessus Name: Debian DLA-423-1 : krb5 security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703466
OpenVAS Name: Debian Security Advisory DSA 3466-1 (krb5 - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: github.com

Timelineinfo

12/23/2015 🔍
01/08/2016 +16 days 🔍
02/03/2016 +26 days 🔍
02/03/2016 +0 days 🔍
02/08/2016 +5 days 🔍
02/12/2016 +4 days 🔍
02/22/2016 +10 days 🔍
02/23/2016 +1 days 🔍
03/14/2016 +20 days 🔍
07/07/2022 +2306 days 🔍

Sourcesinfo

Vendor: mit.edu

Advisory: 83ed75feba32e46f736fcce0d96a0445f29b96c2
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-8631 (🔍)
X-Force: 110393 - MIT Kerberos rb5_unparse_name() function denial of service
SecurityTracker: 1034916
Vulnerability Center: 57261 - Kerberos 5 Remote DoS via a Request Specifying a NULL Principal Name, Medium
SecurityFocus: 82804 - MIT kerberos 5 CVE-2015-8631 Memory Corruption Vulnerability

See also: 🔍

Entryinfo

Created: 02/08/2016 09:28
Updated: 07/07/2022 08:39
Changes: 02/08/2016 09:28 (77), 01/31/2019 13:36 (12), 07/07/2022 08:38 (6), 07/07/2022 08:39 (1)
Complete: 🔍

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